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57 lines
2.5 KiB
C
57 lines
2.5 KiB
C
/*
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* Copyright (c) 1988-1997
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* The Regents of the University of California. All rights reserved.
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*
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* Copyright (c) 1998-2012 Michael Richardson <mcr@tcpdump.org>
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* The TCPDUMP project
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef netdissect_ctype_h
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#define netdissect_ctype_h
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/*
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* Locale-independent macros for testing character properties and
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* stripping the 8th bit from characters.
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*
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* Byte values outside the ASCII range are considered unprintable, so
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* both ND_ASCII_ISPRINT() and ND_ASCII_ISGRAPH() return "false" for them.
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*
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* Assumed to be handed a value between 0 and 255, i.e. don't hand them
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* a char, as those might be in the range -128 to 127.
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*/
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#define ND_ISASCII(c) (!((c) & 0x80)) /* value is an ASCII code point */
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#define ND_ASCII_ISPRINT(c) ((c) >= 0x20 && (c) <= 0x7E)
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#define ND_ASCII_ISGRAPH(c) ((c) > 0x20 && (c) <= 0x7E)
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#define ND_ASCII_ISDIGIT(c) ((c) >= '0' && (c) <= '9')
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#define ND_TOASCII(c) ((c) & 0x7F)
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/*
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* Locale-independent macros for converting to upper or lower case.
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*
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* Byte values outside the ASCII range are not converted. Byte values
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* *in* the ASCII range are converted to byte values in the ASCII range;
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* in particular, 'i' is upper-cased to 'I" and 'I' is lower-cased to 'i',
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* even in Turkish locales.
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*/
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#define ND_ASCII_TOLOWER(c) (((c) >= 'A' && (c) <= 'Z') ? (c) - 'A' + 'a' : (c))
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#define ND_ASCII_TOUPPER(c) (((c) >= 'a' && (c) <= 'z') ? (c) - 'a' + 'A' : (c))
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#endif /* netdissect-ctype.h */
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